中国土壤与肥料
中國土壤與肥料
중국토양여비료
SOIL AND FERTILIZER SCIENCES IN CHINA
2014年
4期
35-41,52
,共8页
刘曾媛%贡璐%张雪妮%韩丽
劉曾媛%貢璐%張雪妮%韓麗
류증원%공로%장설니%한려
土壤酶活性%理化因子%通径分析%克里雅河流域
土壤酶活性%理化因子%通徑分析%剋裏雅河流域
토양매활성%이화인자%통경분석%극리아하류역
soil enzyme activities%physicochemical factors%path analysis%Keriya river watershed
选择克里雅河流域于田绿洲为典型样区，以绿洲土、盐渍土、棕漠土及风沙土为对象，分析了4种土壤酶活性和9种理化因子的特征，结合通径分析讨论了土壤酶活性与理化因子的关系。结果表明，绿洲土土壤酶活性和养分含量显著高于其他类型，风沙土最低；绿洲土土壤水分含量最大，盐渍土、棕漠土和风沙土次之；风沙土容重最高，盐渍土、棕漠土和绿洲土次之；各土壤类型盐渍化程度均较高， pH值差异不显著，均表现为弱碱性；地下水埋深在各土壤类型间的变化范围较大。通径分析显示，土壤水分、容重、有机质、全氮、地下水埋深与4种土壤酶活性均有显著的相关关系，有效磷对碱性磷酸酶有极显著影响。有机质是影响过氧化氢酶活性的最主要因子，同时容重对过氧化氢酶活性亦有较大的直接正效应，影响蔗糖酶活性的主要因子是有机质，全氮是影响脲酶活性的主要因子。
選擇剋裏雅河流域于田綠洲為典型樣區，以綠洲土、鹽漬土、棕漠土及風沙土為對象，分析瞭4種土壤酶活性和9種理化因子的特徵，結閤通徑分析討論瞭土壤酶活性與理化因子的關繫。結果錶明，綠洲土土壤酶活性和養分含量顯著高于其他類型，風沙土最低；綠洲土土壤水分含量最大，鹽漬土、棕漠土和風沙土次之；風沙土容重最高，鹽漬土、棕漠土和綠洲土次之；各土壤類型鹽漬化程度均較高， pH值差異不顯著，均錶現為弱堿性；地下水埋深在各土壤類型間的變化範圍較大。通徑分析顯示，土壤水分、容重、有機質、全氮、地下水埋深與4種土壤酶活性均有顯著的相關關繫，有效燐對堿性燐痠酶有極顯著影響。有機質是影響過氧化氫酶活性的最主要因子，同時容重對過氧化氫酶活性亦有較大的直接正效應，影響蔗糖酶活性的主要因子是有機質，全氮是影響脲酶活性的主要因子。
선택극리아하류역우전록주위전형양구，이록주토、염지토、종막토급풍사토위대상，분석료4충토양매활성화9충이화인자적특정，결합통경분석토론료토양매활성여이화인자적관계。결과표명，록주토토양매활성화양분함량현저고우기타류형，풍사토최저；록주토토양수분함량최대，염지토、종막토화풍사토차지；풍사토용중최고，염지토、종막토화록주토차지；각토양류형염지화정도균교고， pH치차이불현저，균표현위약감성；지하수매심재각토양류형간적변화범위교대。통경분석현시，토양수분、용중、유궤질、전담、지하수매심여4충토양매활성균유현저적상관관계，유효린대감성린산매유겁현저영향。유궤질시영향과양화경매활성적최주요인자，동시용중대과양화경매활성역유교대적직접정효응，영향자당매활성적주요인자시유궤질，전담시영향뇨매활성적주요인자。
Soil samples of 0~20 cm layers under different soil types ( oasis soil, brown desert soil, saline soil and aeolian sandy soil) were collected across Yutian oasis of the Keriya river watershed. By analyzing soil enzyme activities and physico-chemical factors, this study made an attempt to discuss the relationships between soil enzyme activities and physicochemical factors by the methods of path analysis. The results showed that various soil enzyme activities and soil nutrient content of oasis soil was significantly higher than other soil types, while that of aeolian sandy soil was the lowest soil type. Oasis soil had the highest soil moisture content, and saline soil, brown desert soil and aeolian sandy soil in turn followed. The order of soil bulk density of all four soil types was aeolian sandy soil>saline soil>brown desert soil>oasis soil. All four soil types presented high soil salinization degree, and weak alkaline with no significant difference among each soil type. Groundwater depth ranged largely between different soil types. Path analysis showed that soil moisture, bulk density, organic matter, total nitrogen and groundwater depth had significant relationships with four soil enzyme activities. Speicifically, available phosphorus had signifi-cant effect on alkaline phosphatase, organic matter was the main factor influences the catalase activity, and bulk density had a relative large direct positive effect on catalase activity. Soil organic matter was the main factor that affect invertase activity, while total nitrogen was the key factor that influenced urease activity.
